Title (en)

POWER CONVERTING DEVICE WITH INVERTER CIRCUITRY FOR DRIVING MULTIPLE-PHASE VARIABLE-SPEED MOTOR

Publication

EP 0521709 A3 19930519 (EN)

Application

EP 92306080 A 19920701

Priority

JP 16057191 A 19910701

Abstract (en)

[origin: EP0521709A2] A power conversion device (10) of the inverter type for three-phase DC motor (12) includes three parallel pairs of output transistors (Q1 to Q6) between a power supply voltage (20) and the ground potential (22). These pairs provide three upper-stage transistors (Q1, Q3, Q5) and three lower-stage transistors (Q2, Q4, Q6) with diodes (D1 to D6) being coupled thereto. Drivers (24) are connected to the transistors (Q) respectively. A capacitor (C1) for each upper-stage driver (24-1) has an electrode coupled to the power supply voltage and the other electrode coupled to the ground through a corresponding lower-stage transistor (Q2). A controller (30) controls the upper- and lower-stage drivers (24) in response to a pulse width modulation (PWM) signal (Sp) generated by a PWM generator (32) to represent a desired motor rotation speed. The upper-stage transistors (Q1, Q3, Q5) are PWM-driven so that each one turns on and off repeatedly during a 120-degree electrical angle period. While one upper-stage transistor (Q1) is PWM-driven during a 120-degree period, a corresponding lower-stage transistor (Q2) turns on in response to a reverse-phased pulse at the beginning of this period, thereby charging the capacitor (C1). <IMAGE>

IPC 1-7

H02P 6/02

IPC 8 full level

H02M 7/219 (2006.01); H02M 7/12 (2006.01)

CPC (source: EP US)

H02M 7/53803 (2013.01 - EP US); H02P 6/085 (2013.01 - EP US); H03K 2217/0081 (2013.01 - EP US)

Citation (search report)

• [A] EDN ELECTRICAL DESIGN NEWS vol. 32, no. 18, 3 September 1987, NEWTON, MASSACHUSETTS US pages 227 - 234 DANIEL ARTUSI AND WARREN SCHULTZ 'Solid-state devices ease task of designing brushless dc motors'
• [A] JAHNS T. M., BECERRA R. C., EHSANI M.: "INTEGRATED CURRENT REGULATION FOR A BRUSHLESS ECM DRIVE.", IEEE TRANSACTIONS ON POWER ELECTRONICS, INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS, USA, vol. 06., no. 01., 1 January 1991 (1991-01-01), USA, pages 118 - 126., XP000175326, ISSN: 0885-8993, DOI: 10.1109/63.65010
• [A] LAHAYE R.: "LA SERIE SP-600, CIRCUITS HT DE COMMANDE EN DEMI-PONT.", ELECTRONIQUE RADIO PLANS., SPE, PARIS., FR, no. 523., 1 June 1991 (1991-06-01), FR, pages 89 - 93., XP000230884, ISSN: 1144-5742

Designated contracting state (EPC)

DE FR GB

DOCDB simple family (publication)

EP 0521709 A2 19930107; EP 0521709 A3 19930519; EP 0521709 B1 19960508; DE 69210487 D1 19960613; DE 69210487 T2 19961031; JP 3217391 B2 20011009; JP H0515157 A 19930122; US 5373436 A 19941213

DOCDB simple family (application)

EP 92306080 A 19920701; DE 69210487 T 19920701; JP 16057191 A 19910701; US 90649092 A 19920630